Rotary delivery damper for grain cleaning chambers



Feb. 26, 1952 GlLEs 2,587,137

ROTARY DELIVERY DAMPER FOR GRAIN CLEANING CHAMBERS Filed OCT 20, 1949 .lo/mv E. Giles INVENTOR.

Patented Feb. 26, 1952 ROTARY DELIVERY DAMPER FOR GRAIN CLEANING CHAMBERS John E. Giles, Lockport, Ill. Application October 20, 1949, Serial No. 122,406

1 Claim.

The present invention relates to new and useful improvements in rotary delivery dampers for use with grain cleaning chambers wherein a constant air pressure is maintained for removing chaff, husks, hulls and other like foreign matter by air blast.

An important object of the invention is to provide a rotary delivery damper for grain cleaning chambers of this character wherein a continuous and uninterrupted flow of grain from the chamber is accomplished without loss of air pressure in the chamber.

A further object is to provide a rotary delivery damper of this character of simple and practical construction, which is efl'icient and reliable in operation, relatively inexpensive to manufacture and otherwise well adapted for the purposes for which the same is intended.

Other objects and advantages reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming part hereof, wherein like numerals refer to like parts throughout, and in which:

Figure 1 is a perspective view;

Figure 2 is a longitudinal sectional view; and

Figure 3 is a transverse sectional view taken substantially on a line 33 of Figure 2.

Referring now to the drawing in detail wherein for the purpose of illustration I have disclosed a preferred embodiment of the invention the numeral 5 designates generally a housing composed of an upper sheet metal plate 6 and a lower sheet metal plate I of duplicate construction and each shaped to provide a substantially semi-cylindrical central portion 8 with outwardly projecting flanges 9 at each edge thereof.

The upper and lower plates 6 and 1 are secured in assembled relation by end plates I and tie rods ll securing the end plates tightly against the side edges of plates and I and with the flanges 9 of the upper and lower plates 6 and 7 spaced one above the other to provide a grain receiving port l2 and a like grain delivery port l3 of substantially rectangular shape at the inner and outer sides of the housing.

Bearings [4 are provided at the center of each end plate 10 in which a shaft I5 is journaled, one end of the shaft projecting from the housing 5 for mounting a pulley or gear (not shown) thereon for driving the shaft from a suitable power source.

The central portion of the shaft is square shape in cross section as shown at I5 and to which a rotor designated generally at I6 is secured.

The rotor is composed of a plurality of U-shaped sheet metal fins I! each having a fiat attaching base l8 for securing to shaft by. bolts and nuts IS. The fins work in the housing 5 at close tolerance and are spaced apart circumferentially of said housing and of substantially the same maximum width as said ports.

In the operation of the device the grain receiving port l2 of housing 5 is attached to a grain cleaning chamber (not shown) at or near the bottom of the chamber and with housing 5 in a horizontal position. The grain falls from the chamber into the housing 5 by gravity and as rotor i6 is driven the grain is discharged from the housing through the delivery port [3 at the bottom of the rotor as shown by the lower group of arrows in Figure 3 of the drawings while air is permitted to enter the chamber at the upper portion of the housing 5 as indicated by the upper group of arrows to replace any air lost from the chamber through the housing 5.

Accordingly, air in the chamber remains at a constant pressure to maintain air in the chamber at its proper cleaning efficiency.

In view of the foregoing description taken in conjunction with the accompanying drawings it is believed that a clear understanding of the device will be quite apparent to those skilled in this art. A more detailed description is accordingly deemed unnecessary.

It is to be ,understood, however, that even though there is herein shown and described a preferred embodiment of the invention the same is susceptible to certain changes fully comprehended by the spirit of the invention as herein described and the scope of the appended claim.

Having described the invention, what is claimed as new is:

A rotary delivery damper for grain cleaning chambers comprising a housing having a grain receiving port atone side and a grain delivery port at its opposite side of the same size as said receiving port, and a rotor in the housing feeding grain from the receiving to the delivery. port, said rotor comprising a shaft journaled in the housing and having a polygonal section with opposite flat sides in said housing, and a plurality of U-shaped fins having fiat bases detachably connected to the fiat sides of the shaft in opposite pairs and having a close tolerance with the housing to simultaneously discharge the grain in one direction and force air through the housing into the cleaning chamber in an opposite direction, said fins being spaced apart circumferentially of said housing and of substantially the same maximum width as said ports.

JOHN E. GILES.

REFERENCES CITED v The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 659,086 Moussette Oct. 2, 1900 1,284,131 Murdick Nov. 5, 1918 1,402,184 Sinclair Jan. 3, 1922 2,304,753 Seidenstricker Dec. 8,1942 2,352,501 Slavicek June 27, 1944 

